Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
5 × 10 = ______
55 − 10 = ______
60 + 20 = ______
59 + 20 = ______
51 + 20 = ______
31 − 10 = ______
1 × 10 = ______
66 + 10 = ______
66 + 20 = ______
45 + 10 = ______
23 + 20 = ______
84 − 10 = ______
60 + 10 = ______
13 + 20 = ______
53 − 10 = ______
4 × 10 = ______
6 × 10 = ______
46 − 10 = ______
34 + 10 = ______
81 + 10 = ______
